There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

What word begins and ends with an E, but has only one letter?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?